Openmoko Bug #321: ftdi_eeprom often fails silently

Openmoko Public Trac bugs at
Thu Oct 30 16:02:34 CET 2008

#321: ftdi_eeprom often fails silently
    Reporter:  werner at  |        Owner:  openmoko-kernel
        Type:  defect               |       Status:  closed         
    Priority:  high                 |    Milestone:                 
   Component:  default component    |      Version:  Version 2      
    Severity:  critical             |   Resolution:  fixed          
    Keywords:                       |     Haspatch:  0              
   Blockedby:                       |    Estimated:                 
 Patchreview:                       |     Blocking:                 
Reproducible:                       |  
Changes (by werner):

  * status:  assigned => closed
  * resolution:  => fixed


 Oh, this was a hardware problem: the capacitative load on upstream VBUS
 was way too large, causing VBUS to collapse under the inrush current
 just at the moment when the FTDI chip tried to read from the EEPROM.

 Fixed with debug board v3.

Ticket URL: <> <>
openmoko trac

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